References
A. A. Andronov and L. S. Pontryagin, DAN SSSR,14, no. 5, 247, 1937.
R. M. Mints, DAN SSSR,124, no. 6, 1215, 1959.
V. V. Nemytskii and V. V. Stepanov, The Qualitative Theory of Differential Equations [in Russian], Gostekhizdat, Moscow, 1949.
C. C. Pugh, Bull. Amer. Math. Soc.,70, no. 4, 584, 1964.
D. D. Birkgof, Dynamical Systems [in Russian], Gostekhizdat, Moscow-Leningrad, 1941.
Author information
Authors and Affiliations
Additional information
Izvestiya VUZ. Radiofizika, Vol. 11, No. 3, pp. 333–342, 1968
Report at the Conference of Young Scientists, Gor'kii, 1966.
Rights and permissions
About this article
Cite this article
Eshmuradov, K. Necessary conditions for the structural stability of a system of three differential equations without closed trajectories. Radiophys Quantum Electron 11, 185–190 (1968). https://doi.org/10.1007/BF01033794
Issue Date:
DOI: https://doi.org/10.1007/BF01033794